AP_Parachute: make configurable in hwdef.dat

libraries/AP_Parachute/AP_Parachute.cpp

@@ -1,4 +1,7 @@
 #include "AP_Parachute.h"
+
+#if HAL_PARACHUTE_ENABLED
+
 #include <AP_Relay/AP_Relay.h>
 #include <AP_Math/AP_Math.h>
 #include <RC_Channel/RC_Channel.h>
@@ -172,3 +175,4 @@ AP_Parachute *parachute()
 }
 
 }
+#endif // HAL_PARACHUTE_ENABLED

libraries/AP_Parachute/AP_Parachute.h

@@ -22,6 +22,12 @@
 
 #define AP_PARACHUTE_CRITICAL_SINK_DEFAULT      0    // default critical sink speed in m/s to trigger emergency parachute
 
+#ifndef HAL_PARACHUTE_ENABLED
+#define HAL_PARACHUTE_ENABLED !HAL_MINIMIZE_FEATURES
+#endif
+
+#if HAL_PARACHUTE_ENABLED
+
 /// @class	AP_Parachute
 /// @brief	Class managing the release of a parachute
 class AP_Parachute {
@@ -109,3 +115,5 @@ private:
 namespace AP {
     AP_Parachute *parachute();
 };
+
+#endif // HAL_PARACHUTE_ENABLED